Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 32 for “"physical vapour deposition"”.
-
PVD-Schichten in Verdrängereinheiten zur Verschleiß- und Reibungsminimierung bei Betrieb mit synthetischen Estern
… part the tribological properties of coatings (Physical Vapour Deposition) are investigated and compared to standard materials. We first present results concerning friction and wear from basic investigations with simplified specimen. Then coated pistons and valve plates in axial piston pumps are …
-
Vanadium dioxide thermochromic thin films correlation between microstructure, electrical and optical properties
… (VO2) were successfully prepared using two physical vapour deposition methods namely Pulsed Laser Deposition (PLD) and Inverted Cylindrical Magnetron Sputtering (ICMS). We used these two techniques in order to comparatively study the effect of deposition temperature on VO2 thin films …
-
Electrodeposited Ni/Ge and germanide schottky barriers for nanoelectronics applications
… of a few of the relevant devices using electrodeposition of metal on Ge for Schottky barrier fabrication. This low energy metallisation technique offers numerous advantages over the physical vapour deposition techniques. Electrical characteristics of the grown diodes show a high quality …
-
Fabrication and Characterization of Titanium-doped Hydroxyapatite Thin Films
… bioactivity of HA. Magnetron co-sputtering is a physical vapour deposition technique which can be used to create thin coatings with controlled levels of a substituting element. Thin films of titanium-doped hydroxyapatite (HA-Ti) have been deposited onto silicon substrates at three different …
-
Studies of the corrosion of materials for bipolar plates in fuel cells
… technique whereby a wedge modification of physical vapour deposition was used to produce 10 x 10 arrays of electrodes with variable composition – the voltammetry at all 100 electrodes was then recorded simultaneously. Small additions of Cr to Ni led to a large drop in the rate of corrosion …
-
Modelling Thermal Conductivity of Porous Thermal Barrier Coatings for High-Temperature Aero Engines
… applications. There are a certain number of deposition techniques that are used to deposit the thermal coating layer on the substrate; commonly used techniques are Air Plasma Sprayed (APS) or Electron Beam Physical Vapour Deposition (EB-PVD). The objective of this thesis is to model an …
-
The effect of bond coat oxidation on the microstructure and endurance of two thermal barrier coating systems
… zirconia topcoat applied by electron beam physical vapour deposition (EBPVD). The bond coats were applied by either high velocity oxy-fuel spraying (HVOF) or EBPVD. Isothermal oxidation tests were carried out at 950°C, 1050°C and 1150°C for both coating system for up to 3000 hours. Cyclic …
-
High power impulse magnetron sputtering (HIPIMS) : Fundamental plasma studies and material synthesis.
Physical vapour deposition (PVD) technology is widely used for deposition of coatings with applications in various industries; coatings in semiconductor industry, optical coatings or hard coatings mostly used in car and aerospace industries. In 1999 novel physical vapour deposition technology …
-
Abscheidung und Charakterisierung von PECVD-Aluminiumoxidschichten
… temperature protection-applications. Various deposition techniques including chemical vapour deposition (CVD) and physical vapour deposition (PVD) were applied to produce alumina thin films. Alpha-alumina films can be obtained by CVD only at temperatures above 1000ºC. This rather high …
-
The microstructure and properties of unbalanced magnetron sputtered CrN[x] coatings.
… to protect engineering components is the deposition of hard chromium by electroplating. The coatings are known to be quite thick (up to 20 mum), reasonably hard (-HV1000), but contain micro-cracks. This wet deposition process is well understood, but it has technical limitations and is …
-
Fundamental studies of the PVD technique.
… of two commercially available and competitive physical vapour deposition techniques has been made. Titanium nitride (the most widely used hard and decorative coating) has been deposited by both steered arc and the new Arc Bond Sputter (ABS) magnetron technique under a range of deposition …
-
High-throughput synthesis and screening of binary alloys for hydrogen evolution and oxidation reactions
High throughput methods were employed for the physical vapour deposition (PVD) and electrochemical screening of random and equilibrated (annealed at 300 ºC for 15 minutes) binary metal alloys for the hydrogen evolution reaction (HER) and the hydrogen oxidation reaction (HOR). Results are presented …
-
Fabrication and inorganic Modification of 3D Carbon Nanotube Structures for Applications in Energy Storage
… the nanopatterned CNTs with silicon using physical vapour deposition. These electrode structures are up to 50\% thicker than previously reported structures and still retain a stable capacity (650 mAhg$^{-1}$) and a good high-rate performance. Finally, the honeycomb shaped CNT structures …
-
Metal deposition on TiO2(110) via thermal evaporation, photolysis and thermolysis: a combined FT-RAIRS and XPS study
… were deposited on the TiO2(110) surface via Physical Vapour Deposition (PVD) at 295 K. Using CO as a probe adsorbate molecule, FT-RAIRS revealed that Cu islands with sizes less than ca. 3.5 nm exhibited predominantly high Miller Index surfaces, whereas larger islands exhibited (110), (100) …
-
Magnetotransport Effects in Three Dimensional Nanocircuits
… technique (Focused electron beam induced deposition), allowing exploration of complex 3D geometrical effects on magnetotransport signals. The second one incorporates multi-layered magnetic thin film materials on top of 3D non-magnetic nanostructures via physical vapour deposition, paving …
-
Herstellung von dünnen Elektrolytschichten mittels Laserablation und Kathodenzerstäubung für Hochtemperatur-Brennstoffzellen
… films are deposited using two well known physical vapour deposition (PVD) processes, the pulsed laser deposition (PLD) process and the sputtering process. Alternatively lanthanum gallate films of the system La1-xSrxGa1-yMgyO3-1/2(x+y) (LSGM) are deposited using the PLD process. The films …
-
Studies of steered arc motion and macroparticle production in PVD processing.
… process in the production of such coatings is Physical Vapour Deposition (PVD). Interest in such thin films has led to much research effort, both academic and industrial, being devoted to the area. In order that these advancements in technology continue, research into the fundamental aspects of …
-
Tribological Investigation of Nickel Titanium Shape Memory Alloy (NiTi SMA) Coatings
… their mechanical and wear properties. The physical vapour deposition (PVD) sputtering technique is the most commonly used method for the production of amorphous NiTi SMA coating with various composition. This material is very sensitive to its process parameters and to the …
Page 1 of 2